Abstract
A communications system has a plurality of remote stations linked to a master station via three channels, two of which are data channels, and one of which is a signal channel. The two data channels carry time multiplexed digital signals to and from the master station respectively. The signal channel is used by all the remote stations for initiating communication with the master station, which in response to a remote stations signal allocates to that remote station a particular time slot. The system may be part of a satellite communications system, or it may be combined with a cable television distribution network.
Technologies
Mobility and handover
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Maps and Location based Services
Claim
1. A communication system including a plurality of stations interconnected via a communications link having at least a data channel and a signal channel; means associated with a station for injecting control signals into the signal channel, which signals are utilised for the allocation of space on the data channel to permit said station to utilise said data channel.
2. A communication system including a master station and a plurality of remote stations interconnected via a communications link having at least a data channel and a signal channel; means associated with a remote station wishing to utilise the data channel for injecting a control signal into the signal channel; and means associated with the master station for responding to said control signal; and for sending instructions to said remote station enabling itto access said data channel for the transmission or reception of data thereon.
3. A system as claimed in claim 2 and wherein two data channels are associated with the remote stations, a first channel of which is arranged to carry data from the master station to a remote station and the second channel of which is arranged to carry data from the remote station to the master station.
4. A system as claimed in claim 3 and wherein data traffic to and from the master station is in a digital form, and is time division multiplex under the control of the master station.
5. A system as claimed in claim 3, and wherein in response to said control system, said master station is arranged to transmit a signal to the calling remote staion via said first data channel which allocates time slots to said remote station, and which serves to synchronise the data generated by said remote station.
6. A system as claimed in claim 3,4 or 5 and wherein the remote stations form part of a satellite communications network in which a satellite is used as a repeater between the master station and each of the remote stations.
7. A system as claimed in claim 3,4 or 5 and wherein the remote stations are linked to the master station via cable link.
8. A system as claimed in claim 7 and wherein the cable link is shared with a television signal distribution system, and in which the bandwidth allocated to the communications system is of the order of the bandwidth occupied by a television channel.
9. A communications system substantially as illustrated in and described with reference to Figure 1 togetherwith Figures2,3or4.']
Associated Portfolios
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SUMMARY
ClaimChart-GB2177873-STO
Patent number:GB2177873
Claim Chart Type : SEP Claim Chart
Price: 200 €
Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.